Spark-arrester.



Nu. 653,5!8. Patented July l0 S. S. MARTIN.

SPARK ARRESTER.

(Apglication filed June 29, 1899.)

(No Model.)

x irllllllflll III! A OHNEYS ITED TATEs PATENT OFFICE.

' STEPHEN SALS BURY MARTIN, OF EVERGREEN, COLORADO, ASSIGNOR OFON'F-IIALF TO JOHN WESLEY MARTIN, OF SAME PLACE.

SPARK-AR-RESTER.

SPECIFICATION forming part of Letters Patent No. 653,518, dated July1.0, 1900.

Application filed June 29,1899. Serial No. 722,265. (No-model.)

T0 all whom it may concern.- Be it known that I, STEPHEN SALSBURYll/IABTIN, of Evergreen, in the county of Jefspark arrester, collector,and"di'reictof'dffi Io'plete within itself and so constructed that itmay be readily attached to the top of any smoke stack, pipe, flue, orchimney and whereby the arresting, collecting, and directing screen,kept constantly rotated by-the natural or forced draft throughthesmokepipe,will cause the sparks, einders, and ese'aping coal to beconveyed to a receptacle in which said products will settle and beconducted back to the fire-box or fire or to any desired point below thedevice.

The invention consists in the novel construction and combination of theseveral parts,'as will be hereinafter fully set forth, and pointed outinthe claims.

Reference is to be had to the accompanyin drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a plan view of the improved device. Fig. 2 is averticalsection thereof, and Fig. 3 is a perspective view of a bracket used inthe construction of the device.

The base Ais in .the form of a pipe and is given such shape that it maybe fitted over or into a smoke-stack, chimney, or flue, and afunnel-shaped casing B is firmly secured to the upper portion of saidbase A, forming a receiving-chamber for the cinders, coal, and sparks.The base A extends a slight dis- 4 tance withinthe bottom portion of thechamber 10, and a conducting-pipe for the waste products of combustionis attached to the upper portion of the base AI Said'conductingpipe 11is at an angle to a line drawn-perpen= dicularly through the center ofthe device, and one side'of the conducting flue or pipe 11 is made torest against a wall c the chamber 10, formed by the funnel-casing B. Theupper end 11 of the conducting-flue, howcasing, is" carried verticallyupward, so that the upper edge of the conducting-flue 11 is ever, wheresaid flue engages with the f unnel- The conducting-flue is secured tothe funnelcasing by means of bolts or rivets 12 or their equivalents,and a bracket is located upon the inner inclined surface of theconducting-flue. This bracket comprises an upright section 13,

a horizontal table-section lg thecenter of the bracket by means of asuitable nut 18, as illustrated in Fig. 2. The lower end 19 of the postis made tapering to form a cone 19, and ,a cone 20 is located at theupper end of the post 16. "A sleeve 21 is loosely fitted around the post16, and said sleeve is provided at its lower end with a cap facing thelower cone 19 of said post, and said cap carries balls 22, that travelon said cone 19, while a second cap is formed at the upper end of thesleeve, likewise carrying balls 22, that travel upon the upper cone 20,as shown in Fig. 2. The sleeve 21 is provided at the top with a cap 23,that extends over the upper end of the post 16 and the upper cone 20.

approved manner to the bottom of the sleeve 21, and while this screen isshown as inclining from its outer edge toward the center it may be madestraight,if desired. Said screen is of such dimensions that it entirelycovers the upper end of the conducting-fiue'll and extends quite closeto the upper portion of the funnel shaped casing B, is provided with azdownwardly-' extending marginal flange 24, and braces 25 are attachedtosaid flange and to projections from the cap 23. The said screen isprovided with a series extending from its periphery to a point near thecenter. 7 gage with the screen, and the fans are curved and their innerfaces are at an acute angle to the screen; Preferably the upper edges ofthe fans or wings at their inner ends are more or less beveled. Thesefans are all curved in the same direction and are so placed that as theyreach the conducting-flue 11 the natural or forced draft from thesaid-flue will strike tion of said bracket, and the post is held to Thelower edges of the fans en-' of the said funnel-casing, as shown in Fig.2.

A screen 0 is secured in any suitable or The screen 0 I of wings or fans26 upon its upper' surface smoke-stack, pipe, line, or chimney servesas.

adjustable, having bolts and nuts or setscrews at their outer ends whichwill hold.

thei'n'firmly in place when. adjusted at the right angle to impart tothe screenthe desired speed time. The speed of the screen may beincreased or diminished by placing the wings or fans in more or less ofa flattened or horizontal position or in'a more or less uprightposition. I

A tube 27 enters the chamber of the device at or near the bottom, andthis tube is carried downward to any desired point below the'device-as,for example, it may be carried to the fire-box or to the fire direct.Thus it will be observed that the application of the natural draft orforced draft caused by the exhaust-steam from the-engine entering the amotor for the device.

As the screen revolves it carries the cinders or other waste products ofcombustion from the .top of the stack to the surrounding chamber 10, andas the screen carries the sparks or cinders beyond the influence of thedraft they naturally gravitate to the bottom of the chamber 10, in whichthere is practically no draft, and the arrested material will then passinto i the small pipe 27 in the bottom of the chamber 10 and will beconducted back to the fire or to'any other desired point. The pipe 27 ispreferably made continuous from the chamber 10 to the point where thematerial is to be delivered.

I desire it to be. understood that instead of using ball-bearings at theupper end of the post or shaft 16 said post or shaft may be providedwith a hardened-steel pivot at that point.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. A spark-arrester, comprisinga conducting-fluehaving an angular upper end, a funnel-shaped easing into which theangular upper end of the conducting-flue projects and against the wallof which the said flue rests, the said casing extending above the top ofthe angular end of the conducting-flue, and having an outlet in its sideat or near the lower end, a screen centrally mounted in the upper partof the casing to revolve therein Z and over the angular end of saidconductingnucanurn close proximity thereto, and wings on the upper faceof the screen, substantially as described. V

2. A spark-arrester, comprisinga cond ucting-fiue having an angularupper end provided with a bracket at its end, a funnelshap'ed' per endof the conducting-flue and extending above the same, the said casinghaving an outlet in its'side at or near the lower end, a

screen mouuted'on the bracket or the angua or number of revolutions in agiven a shaped casing lar upper end of the conducting-fl ue andrevolving over the upper angular end of the conducting-flue and in closeproximity to the same, and wings on the upper face of the screen,substantially as described.

3. A sparlr-arrester, comprising a conducting-flue having an inclinedupper portion, the upper end of the outer wall of theflue being extendedupward vertically, the said inclined end being provided with an externalbracket, a funnel-shaped casing surrounding the inclined portion ofcured thereto, the said casing'being provided at its lower end with anoutlet, a screen havin g a downwardly-extending marginal flange andmounted on th'ejbracket to revolve over the upper end of the inclinedportion of the conducting-flue and in close proximity thereto, and wingssecured to the upper face of the'screen, substantially as described.

4. In a spark-arrester,tlie combination with a funnel-shaped casinghaving an inclined flue therein and provided with an outlet at or nearits bottom, said flue extending nearly to the top of the casing, of anangular bracket secured to the upper end of the the conducting-flue andse-' flue, a post mounted in the bracket, a sleeve surrounding 1 to thebracket, a sleeve mounted on the post and provided with a cap, a screensecured to the-lower end of the sleeve, rods secured to 5 the margin ofthe screen and to the cap of the sleeve, and wirigs on the upper surfaceof the screen, substantially as described.

6. A spark-arrester, comprisinga funnelhaving an outlet at its lowerend, an inclined (fine in said casing, a post f mounted in the upperpart of the casing, said 1 post being provided. sleevefitting loosely 1caps at its ends, balls between sleeves and the cones of the post, ascreen sewit-h cones at its ends, a on the post and having the caps ofthe cured to the lower end of the sleeve, wings on I the upper face ofthe screen, a cap secured to the upper end of the sleeve over the post,and irods secured to the said cap andto the margin of the screen,

substantially as described. 7. In a spark;arrester,the combination witha casing, a fine in the casing, and a screen 2 mounted to revolve in thecasing over the top of wings on the upper face of the of the flue,

having their inner ends screen, said wings lpivoted and their outer endsadjustably se-' gcured to the margin of the screen, jtially as and forthe purpose set forth. casing surrounding the angular upsubstan-Witnesses:

' WILLIAM Ross, HENRY Powma.

